Process for the manufacture of spheroidal bodies by selective
agglomeration
    12.
    发明授权
    Process for the manufacture of spheroidal bodies by selective agglomeration 失效
    通过选择性聚集制造球状体的方法

    公开(公告)号:US4737478A

    公开(公告)日:1988-04-12

    申请号:US881156

    申请日:1986-07-02

    申请人: Andrew Rainis

    发明人: Andrew Rainis

    摘要: This invention relates to the preparation of small spheroidal solid agglomerates. More particularly, the process produces strong solid spheroidal agglomerates containing alumina or a mixture of alumina and at least one other inorganic material, which process comprises:(a) mixing at high speed a portion of alumina or a mixture of alumina and at least one other inorganic material in the form of hydrophilic micron-sized particles in a water-immiscible liquid thereby forming a dispersion;(b) gradually adding to the dispersion an aqueous acidic phase while continuing the high-speed mixing until substantially spherical micro-agglomerates form within the water-immiscible liquid;(c) subjecting the micro-agglomerates to agitation in a vessel having a hydrophobic inner surface at a speed low enough to achieve substantially uniformly sized spheroidal agglomerates;(d) drying the agglomerates to produce hardened spheroidal uniformly sized agglomerates; and(e) optionally further separating the agglomerates by size. Optionally, the aqueous phase in step (b) may include the soluble salts of catalytic metals, and bases and/or colloidal-sized inorganic particles. These spheroidal particles can have either smooth surfaces or polylobe surfaces depending on the conditions of preparation. They have diameters generally between 1 to 5 mm and are useful as catalysts, or catalyst supports. Catalytic components may subsequently be deposited on the support.

    摘要翻译: 本发明涉及小球状固体附聚物的制备。 更具体地,该方法产生含有氧化铝或氧化铝和至少一种其它无机材料的混合物的强固体球状聚集体,该方法包括:(a)高速混合一部分氧化铝或氧化铝与至少一种其它的混合物 在水不混溶液体中的亲水微米级颗粒形式的无机材料,从而形成分散体; (b)逐渐向分散体中加入酸性水相,同时继续进行高速混合,直至在与水不混溶的液体中形成基本上为球形的微团聚体; (c)使微团聚体在具有疏水性内表面的容器中以足够低的速度搅拌以实现基本均匀的球形聚集体; (d)干燥附聚物以产生硬化的球形均匀大小的团块; 和(e)任选地按照大小进一步分离附聚物。 任选地,步骤(b)中的水相可以包括催化金属的可溶性盐,以及碱和/或胶体尺寸的无机颗粒。 这些球形颗粒可以具有光滑表面或多叶表面,这取决于制备条件。 它们的直径通常在1至5mm之间,并且可用作催化剂或催化剂载体。 催化组分随后可以沉积在载体上。

    Method for beneficiation of phosphate rock
    16.
    发明授权
    Method for beneficiation of phosphate rock 失效
    磷酸盐岩选矿方法

    公开(公告)号:US4388180A

    公开(公告)日:1983-06-14

    申请号:US330300

    申请日:1981-12-14

    申请人: Andrew Rainis

    发明人: Andrew Rainis

    CPC分类号: B03B1/04 B03D1/021 B03D3/06

    摘要: A process is disclosed which removes gangue minerals from phosphate rock by forming an aqueous slurry of phosphate rock and its impurities, then using a low boiling, nonpolar, water insoluble, bridging hydrocarbon to selectively agglomerate the phosphates.

    摘要翻译: 公开了一种方法,其通过形成磷酸盐岩及其杂质的含水浆料,然后使用低沸点,非极性的水不溶性桥联烃选择性地聚集磷酸盐,从磷酸盐岩中除去脉石矿物。